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Help CenterGW4 Type Outdoor HV Disconnecting Switch 72.5kV 2000A Electric Motor Operator
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Jinhua Dika Electrical Equipment Co., Ltd., a specialized manufacturer with over 15 years of experience in high-voltage electrical equipment, proudly presents the GW4 Type Outdoor HV Disconnecting Switch 72.5kV 2000A with Electric Motor Operator. This disconnecting switch is engineered to meet the most demanding requirements of modern power grids, offering reliable isolation and safe maintenance operations. With an annual export value exceeding US$1 million and a dedicated team of 11-50 skilled professionals, we ensure every unit is manufactured under strict quality control standards. The integration of an electric motor operator enhances automation and remote control capabilities, making it an ideal solution for substations and industrial power distribution systems.
The GW4 disconnecting switch is designed for outdoor installation in high-voltage networks rated up to 72.5 kV and a continuous current carrying capacity of 2000 A. Its robust construction, using high-grade copper and stainless steel components, guarantees excellent electrical conductivity and corrosion resistance. The motor operator mechanism allows for both local and remote operation, significantly improving operational efficiency and safety. Below is a detailed overview of its technical specifications:
| Parameter | Value |
| Rated Voltage | 72.5 kV |
| Rated Current | 2000 A |
| Rated Short-Time Withstand Current | 40 kA / 3 s |
| Rated Peak Withstand Current | 100 kA |
| Insulation Level | Lightning impulse withstand (peak) 350 kV; Power-frequency withstand 160 kV |
| Operating Mechanism | Electric motor operator with manual override |
| Control Voltage | AC/DC 110V, 220V (other voltages available on request) |
| Mechanical Life | ≥ 2000 operations |
| Degree of Protection | IP54 (control box), weatherproof design |
| Ambient Temperature Range | -40°C to +55°C |
| Standards | IEC 62271-102, GB 1985 (equivalent international standards) |
Key Features and Benefits:
- High Reliability Motor Operator: The electric motor drive ensures consistent, smooth opening and closing actions, reducing manual intervention and risk of operator error. A manual override is provided for emergency or maintenance use.
- Robust Outdoor Construction: The switch is built with weather-resistant materials including hot-dip galvanized steel base and silver-plated copper contacts, designed to withstand harsh outdoor conditions such as rain, snow, and extreme temperatures.
- Compact & Space-Saving Design: The GW4 type features a center-break or double-break configuration (depending on variant), offering a compact footprint that simplifies installation in existing substation layouts.
- Low Maintenance Requirements: Self-lubricated bearings and corrosion-resistant components extend service intervals. The sealed motor operator enclosure minimizes dust and moisture ingress.
- Flexible Control Options: Supports local push-button control, remote SCADA integration, and optional wireless control modules. Control voltages can be customized per project specifications.
- Enhanced Safety: Visible break gap provides clear isolation indication. Integrated grounding switch option available for additional safety during maintenance.
Technical Advantages:
The GW4 disconnecting switch employs a patented contact design that ensures low contact resistance (
Applications:
- Substation incoming/outgoing line isolation
- Transformer and circuit breaker isolation
- Busbar sectionalizing in distribution networks
- Industrial power plants (steel, mining, petrochemical)
- Renewable energy projects (wind, solar farm collector systems)
Company Reliability:
Jinhua Dika Electrical Equipment Co., Ltd. is a professional manufacturer located in Jinhua, Zhejiang, China. Our commitment to quality is demonstrated by our adherence to internationally recognized management systems, including ISO9001 and ISO14000 certifications. We have established a comprehensive quality control system that covers raw material inspection, in-process monitoring, and final testing. With an annual export value of US$1 - 1.5 million, our products are shipped to major ports such as Shanghai, Tianjin, Guangzhou, and Ningbo, serving markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We maintain a dedicated after-sales support team to assist with installation, commissioning, and technical queries. Choose Dika for a disconnecting switch that delivers consistent performance and long service life.
Frequently Asked Questions (FAQ):
-
Q: What is the typical lead time for the GW4 disconnecting switch with motor operator?
A: Standard lead time is 30-45 working days after order confirmation, depending on quantity and customization requirements. For urgent projects, expedited delivery can be arranged. -
Q: Can the motor operator be replaced or upgraded in the field?
A: Yes, the motor operator unit is designed as a modular component that can be exchanged without removing the entire switch. We provide spare parts and technical documentation for field service. -
Q: Does the switch come with an integrated earthing switch?
A: The GW4 type can be configured with an optional earthing switch (grounding blade) on one or both sides. Please specify your requirement when ordering. -
Q: What control voltages are supported for the motor operator?
A: Standard options are AC/DC 110V or 220V. Other voltages such as 48V DC, 380V AC are available upon request. The control circuit also includes auxiliary contacts for status indication. -
Q: How does the switch perform under severe icing conditions?
A: Our design includes heated contacts (optional) and a high-torque motor to break ice layers. The switch has been tested for operations down to -40°C. Please consult our technical team for specific ice breaking requirements. -
Q: What is the expected maintenance interval for the motor operator?
A: Under normal operating conditions, the motor operator requires inspection every 5 years or 2000 operations, whichever comes first. The gearbox is sealed and lubricated for life; only the control box filter and seals need periodic checking. -
Q: Does the product comply with international standards?
A: Yes, the GW4 disconnecting switch is designed and tested according to IEC 62271-102 and GB 1985 standards. We can also customize according to ANSI or other regional standards upon request. -
Q: Can you provide a sample for testing?
A: Yes, sample orders are welcome. We can arrange a pre-production sample for customer evaluation. Lead time for a sample unit is approximately 20 working days.
With years of successful project references and a global network of satisfied customers, Jinhua Dika Electrical Equipment Co., Ltd. is your trusted partner for high-voltage disconnecting switches. Contact us today to discuss your specific application needs or request a quotation. We are ready to deliver a cost-effective, reliable solution that ensures safe and efficient power system operation.
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